CN203755730U - External prestress core safety containment shell - Google Patents
External prestress core safety containment shell Download PDFInfo
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- CN203755730U CN203755730U CN201420103464.0U CN201420103464U CN203755730U CN 203755730 U CN203755730 U CN 203755730U CN 201420103464 U CN201420103464 U CN 201420103464U CN 203755730 U CN203755730 U CN 203755730U
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- outer tank
- prestress
- concrete outer
- concrete
- prestressed
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Abstract
The utility model provides an external prestress core safety containment shell which comprises a concrete outer tank. A prestress steel bundle mesh enclosure is arranged on the outer portion of the concrete outer tank and is fixed to the concrete outer tank through a connecting structure. On the basis of a traditional prestress concrete safety containment shell, the external prestress technology is proposed to be applied to the prestress concrete outer tank, and prestress steel bundles traditionally arranged inside the concrete outer tank are arranged on the outer portion of the concrete outer tank. The problem that prestress can be lost along with the lasting of time can be solved by adopting the method of replacing the steel bundles regularly. The damage and prestress loosening caused by the high temperature and the high pressure on the prestress steel bundles under the condition of accidents are avoided, the supporting function can be still provided under the situation of the failure of a concrete inner tank, and thus the bearing capacity is improved. Due to the fact that the prestress steel bundle mesh enclosure further has the function of preventing the concrete outer tank when a collision accident happens, the safety of the concrete outer tank is improved, and the time for professional personnel to take safety measures is prolonged.
Description
Technical field
The utility model relates to a kind of Nuclear containment structure, specifically can be used in prestressed concrete containment vessel.Also can be used for reinforcing and the transformation of existing prestressed concrete containment vessel.
Background technology
Nuclear power is subject to extensive use as clean, economical, the safe energy, and in the long run, Nuclear Power Development is to improve energy resource structure, reduces the important channel of environment pollution.But, once nuclear power station is destroyed, there is nuclear leakage, must cause huge disaster.Nuclear containment structure, as last one safety curtain of nuclear reactor, has important function for the nuclear power performance safety of nuclear reactor, should be able to bear interior pressure and the temperature that limiting fault causes and suddenly increase, and can bear the external shock that flies to hit thing.China at present large commercial nuclear power station of operation has all adopted prestressed concrete containment vessel, and prestressed concrete containment vessel comprises in prestressed concrete outer tank and steel lining.The structural pre-stress system of prestressed concrete containment vessel is made up of three layers of prestressed strand in concrete outer tank, and this pre-stress system is that nuclear power station is limited in the important guarantee in permissible level by the dissipation of radioactive substance in the time there is leakage accident.At traditional prestressed concrete containment vessel during one's term of military service, along with the continuity of time, due to the cause of loss of prestress, margin of safety will decline to some extent.In the time that accident occurs, HTHP also can cause pre-stress system generation Relaxation of prestressing.In addition, the design reference period of Nuclear containment was brought up to 60 years by 40 years, performance to prestressed concrete containment vessel structure is also had higher requirement, so need further to strengthen the research to use pre-stress system application of new generation in prestressed concrete containment vessel structure.
External prestressing structure system is one of important branch of post-tensioned prestressing structure system, to be arranged in interior prestressed structure in concrete section corresponding with traditional presstressed reinforcing steel, refers to that the cable wire to being arranged in outside bearing structure body applies the prestressed structure system that prestressing force forms.External prestressing strengthening 20th century of method come from the former Soviet Union forties, be mainly used in the reinforcing maintenance of industrial premises, therefore extended the application life of many buildings.Late 1970s and the beginning of the eighties, along with the increase of highway in China bridge load tonnage, the supporting capacity of old bridge can not meet instructions for use and need to strengthen, and external prestressing technology starts the reinforcing for highway bridge, has obtained good economic and social benefit.
Through development and application in recent years, external prestressing technology is all to make some progress in design theory or material installation, construction technology, and its range of application has been extended to strengthening reconstruction and the provisional prestressed structure of building structure or the provisional cable wire of constructing from early stage bridge strengthening.In addition, the range of application of external prestressing has also been extended to steel work, wooden construction, masonry structure etc. from being applied to merely concrete structure.With respect to for arranging the general prestressed structure of reinforcing bar in member section, it is little that external prestressing structure has loss of prestress, and constructing operation is simplified, and is convenient to check principal rod corrosion condition, is convenient to adjust stretching force and changes the advantages such as principal rod.At present, do not have bibliographical information external prestressing structure system to be applied to Nuclear containment structure.
Summary of the invention
The purpose of this utility model is to provide a kind of prestressed strand to regularly replace, and improves bearing capacity, increases the external prestressing Nuclear containment of the safety of concrete outer tank.
The purpose of this utility model is achieved in that and comprises concrete outer tank, and in described concrete outer tank, prestressed strand guard is set outward, described prestressed strand guard is fixed in concrete outer tank by syndeton.
The utility model can also comprise:
1, described syndeton comprises the pre-embedded steel slab that is evenly embedded in concrete outer tank, steel column, the I shape connector being connected with the steel column other end that one end is connected with pre-embedded steel slab and prestressed strand is fixed on to the rigging on I shape connector.
2, on same I shape connector, fix two bundle prestressed strands by two described riggings, a rigging is positioned on the intermediate transverse girder of I shape connector, another rigging is positioned at an end of I shape connector, the two bundle prestressed strands netted prestressed strand guard of vertical formation mutually.
The utility model is on the basis of traditional prestressed concrete containment vessel, propose external prestressing technology to be applied to prestressed concrete outer tank, traditional prestressed strand that is arranged in concrete outer tank inside is arranged in to concrete outer tank external, thereby proposes a kind of nucleus containment structure.
For the loss of prestress that under the normal service condition of traditional prestressed concrete containment vessel structure, continuity causes in time, and under emergency conditions, resist the shortcoming such as HTHP performance and anti-collision poor performance, the utility model has the advantage of: 1) under normal service condition, because prestressing force can lose in continuity in time, can adopt the way of periodic replacement prestressed strand to address this problem, this way is simple to operate, is easy to realize.2) by external prestressed strand placement, avoid destruction and the Relaxation of prestressing of HTHP to prestressed strand under emergency conditions, in the situation that concrete inner canister loses efficacy, still can provide a supporting role, thereby improve bearing capacity.3), in the time there is shock accident, prestressed strand guard also has the function of protection concrete outer tank, has increased the safety of concrete outer tank, has extended the time that professional takes safety measures.
Brief description of the drawings
Fig. 1 is pre-embedded steel slab, steel column and prestressed reinforcement guard connection diagram;
Fig. 2 a is that steel column is connected detail drawing with prestressed strand, and Fig. 2 b is the left view of Fig. 2 a;
Fig. 3 is prestressing force guard elevation;
Fig. 4 is prestressing force guard top view.
Detailed description of the invention
For example the utility model is described in more detail below in conjunction with accompanying drawing.
The purpose of this utility model is to improve the security performance of prestressed concrete containment vessel.According to Modern Design Technology, propose to adopt external prestressing steel bundle guard, realize external prestressing steel bundle guard by pre-embedded steel slab, steel column and rigging etc. and be connected with concrete outer tank, realized and there is the external prestressing nucleus containment structure that bearing capacity improves.
This specific embodiments is according to the design feature of Nuclear containment outer tank, on the basis of traditional prestressed concrete outer tank, adopts prestressed strand guard 1 structure, by prestressed strand 5 in the external layout of concrete outer tank 4.Prestressed strand 5 is connected with concrete outer tank 4 by pre-embedded steel slab 2, steel column 3 and rigging 6 etc.
When construction, first concrete outer tank 4 is built.In building, according to design attitude and the requirement of strength pre-embedded steel slab 2 that calculate early stage, refer to Fig. 1.Around the concrete outer tank 4 of building, set up scaffold, to the stretch-draw of steel Shu Jinhang post stretching, and prestressed strand 5 good stretch-draw is divided into level and vertical both direction permanent position respectively on scaffold.Steel column 3 one end are connected with pre-embedded steel slab 2, and the other end is connected with I shape connector 7, all adopt the technology that is welded to connect.Prestressing tendon 5 is connected with I shape connector 7 with nut 8 by rigging 6, refers to Fig. 2 a to Fig. 2 b.When connection, the prestressed strand 5 of horizontal direction is all in the unified placement of the side near concrete outer tank 4, and the prestressed strand 5 of vertical direction is placed on outside.For preventing that prestressed strand 5 and steel column 3 from corrosion occurring, adopt directly extruding PE material parcel protection, can field fabrication or directly buy finished product use.Scaffold can be removed with the construction speed of prestressed reinforcement guard, or end to be onstructed unified dismounting afterwards.Prestressed strand guard 1 after building up is divided into level, vertical and dome three parts, and 360 ° of all-round long layouts of horizontal direction, refer to Fig. 3,4.
Claims (3)
1. an external prestressing Nuclear containment, comprises concrete outer tank, it is characterized in that: in described concrete outer tank, prestressed strand guard is set outward, described prestressed strand guard is fixed in concrete outer tank by syndeton.
2. external prestressing Nuclear containment according to claim 1, is characterized in that: described syndeton comprises the pre-embedded steel slab that is evenly embedded in concrete outer tank, steel column, the I shape connector being connected with the steel column other end that one end is connected with pre-embedded steel slab and prestressed strand is fixed on to the rigging on I shape connector.
3. external prestressing Nuclear containment according to claim 2, it is characterized in that: on same I shape connector, fix two bundle prestressed strands by two described riggings, a rigging is positioned on the intermediate transverse girder of I shape connector, another rigging is positioned at an end of I shape connector, the two bundle prestressed strands netted prestressed strand guard of vertical formation mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420103464.0U CN203755730U (en) | 2014-03-08 | 2014-03-08 | External prestress core safety containment shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420103464.0U CN203755730U (en) | 2014-03-08 | 2014-03-08 | External prestress core safety containment shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203755730U true CN203755730U (en) | 2014-08-06 |
Family
ID=51251019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420103464.0U Withdrawn - After Issue CN203755730U (en) | 2014-03-08 | 2014-03-08 | External prestress core safety containment shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203755730U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899104A (en) * | 2014-03-08 | 2014-07-02 | 哈尔滨工程大学 | Containment for external prestressing nucleus |
| CN107170489A (en) * | 2017-05-24 | 2017-09-15 | 四川行之智汇知识产权运营有限公司 | The prestress pipe arrangement of reactor concrete containment |
| CN107170488A (en) * | 2017-05-24 | 2017-09-15 | 四川行之智汇知识产权运营有限公司 | A kind of skeleton to be poured of concrete containment |
-
2014
- 2014-03-08 CN CN201420103464.0U patent/CN203755730U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899104A (en) * | 2014-03-08 | 2014-07-02 | 哈尔滨工程大学 | Containment for external prestressing nucleus |
| CN103899104B (en) * | 2014-03-08 | 2016-03-09 | 哈尔滨工程大学 | External prestressing Nuclear containment |
| CN107170489A (en) * | 2017-05-24 | 2017-09-15 | 四川行之智汇知识产权运营有限公司 | The prestress pipe arrangement of reactor concrete containment |
| CN107170488A (en) * | 2017-05-24 | 2017-09-15 | 四川行之智汇知识产权运营有限公司 | A kind of skeleton to be poured of concrete containment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140806 Effective date of abandoning: 20160309 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |